Closing device with stop for swinging doors.



A. DAMITZ. CLOSING DEVICE WITH STOP FOR SWINGING DOORS.

APPLICATION FILED Juma, 1901.

Patented July 13, 1909.

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A. DAMITZ. CLOSING DEVICE WITH STOP FOR swmema noons.

APPLICATION FILED JAN. 28, 1907.

927,498. Patentd July 13, 1909.

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A. DAMITZ.

CLOSING 1mm WITH s'ror FOR swmeme noons.

APPLICATION rxmm Emma. 1907.

- Patented July 13, 1909.

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UNITED STATES PATENT OFFICE.

ADOLF DAMITZ, OF BERLIN, GERMANY.

CLOSING DEVICE WITH STOP FOR SWINGING DOORS.

T 0 all whom it may concern:

Be it known that I, AnoLF DAMITZ, manufacturer, a subject of the Empireof Germany, residing at Elisabeth-Ufer 53, in Berlin, Empire of Germany,have invented certain new and useful Improvements in Closing Deviceswith Steps for Swinging Doors, of which the following is aspecification.

This invention relates to closing devices for doors, especially toswinging doors that swing both ways to the closed position.

The invention has for its object to provide an improved means forreturning the door to its closed position when swung inwardly oroutwardly, and which will insure the door being swung to a closedposition without vibrating to and fro from such position in the act ofclosing.

The checking device or retarding means by which the present invention iscontrolled forms no part of the present invention. The device can beeasily secured to the door without the aid of any skilled mechanic.

The accompanying drawings illustrate embodiments of my invention inwhich- Figure 1 is a plan view. Fig. 2 is a section Fig. 3 is a sideelevation showing certain parts in vertical section. Fig. 4is an endelevation, showing certain parts in vertical section. Figs. 5, 6 and 7show details of the levers and links connecting the closing device withthe lintel of the doors; Figs. 1, 2 and 1 show details of the mechanism;and Figs. 8 and 9 show the device attached to a double door and a singledoor respectively.

The device is illustrated as comprising a vertical housing 23 ofsubstantially cylindrical shape and a horizontal cylindrical housing 22that may contain any suitable retarding means such as a dash pot. Thisart of the device is not illustrated but will be of a character thatwill permit the main spindle to be swung in either direction from anintermediate position without any material resistance being offered butwill retard the return movement to the intermediate position so that theclosing movement is checked. The lower housing 22 is shown as having endmembers 25 and 26, and the housing 23 is provided with a to member 24.

In the housing 23 is rotatab y mounted a carrier 3 comprising in itsconstruction a sleeve 27, loosely surrounding the spindle or shaft 1,and an offset open ended cylindrical portion or base having a verticalprojection Specification of Letters Patent.

Application filed January 28, 1907.

Patented July 13, 1909.

Serial No. 354,358.

7, constructed and arranged to engage an inwardly projecting lug 10 onthe inner wall of the housing as shown in 2 and 4. The housing isprovided with a slot or recess 9 to permit the insertion in the housingpast the lug 10 of said projection 7. The lower part of the carrierrotates a collar 4 carried by a spindle 1 that rotates in the sleeve 27.A pin 5 on the spindle 1. engages a lug 6 011 the inner wall of thecarrier 3 at its offset portion. In the carrier 8 is a coil spring 2having its outer end bent back to form a hook that engages the extension7 of the casing.

The bushing 11 surrounds the spindle 1 and is rotatably mounted on thesleeve 27. The upper part of the bushing projects through the bore inthe top member 24 and has a flange provided with ratchet teeth. 11'.This bushing has a slot 12 at which. is engaged the inner end of thespring A. sleeve 13 surrounds the upper part of the spindle 1 and has aplate 14 to which is pivoted a pawl 15 that engages the ratchet teeth 11on the bushing. The sleeve 13 also carries a lug 1 1. The spindle 1carries a cross arm 17 fast on its upper end to which is pivoted a lever19 having a movement in a vertical plane. The arm 17 carries a lug 18 inposition to engage the lug 1 1 on the sleeve 13.

Any suitable lover or link arrangement may be used to connect the lever19 with the lintel or other suitable part of the door. In theconstruction illustrated, a link 20 is pivotally connected with the armby means of a screw 20* and a block 20*. The other end of link 20 ispivotally connected with a bracket 29. In the construction shown in Fig.7 this pivotal connection may be by means of a threaded arm 28 on thelever 20 thatengages a threaded bore in the bracket. By this means whenthe lever 20 is swung it will be given a vertical movement also. By theuse of this lever arrangement when the door is swung in the oppositedirection from the side to which the closing device is secured, thelever 19 will swing downward and freely pass under the lintel of thedoor.

A simple lever arrangement is shown in. Figs. 5 and 6 in which theadjusting mechanism is not provided.

In the assembling of the mechanism the springis first tensioned beforethe arm 17 is placed on the spindle. This is accomplished by putting aspanner around. the ratchet wheel 1S and turning this to the left, whenthe inner end of the spring will be turned and the spring placed undertension, the spring being fastened at its other end to the projection 7of the carrier 3. The spring is held under tension by the pawl 15engaging the ratchet wheel 11 When released the pawl 15 will turn thesleeve 13 to the right until the projection 14 abuts the projection 16of the housing cover 24. Thereupon the lever and link arrangement can besecured in place.

When the door is opened and swung away from the side to which theclosing device is attached, the lug on the arm will push the plate 14and through the pawl will rotate the sleeve 13 and wind up the springfrom the inner end. When released the tension of the spring will returnthe parts with the lever until the abutment on the plate 14 engages thelug on the top 24, such movement being retarded by the checking device.In this described movement of the parts, the outer end of the springwill be held against movement by reasonof its engagement with the casing3, and the latter through the projection 7 will be arrested byengagement with the lug 10. Upon the arm and lever being swung in theopposite direction, the pin 5 on the spindle will strike the lug 6 onthe carrier 3, and thereby wind up the spring from its outer end. Duringsuch movement the inner end of the spring is locked by reason of the lugon the plate 14 pressing against the lug 18 on the top 24: of thehousing. During the latter movement, the projection 7 on the carrier 3moves away from the lug 10 on the inner wall of the housing being freeto move in that direction and during the other movement, the pin 5swings away from the lug 6 on the casing.

Having thus described my invention, I claim:

1. In. a door closer, the combination of a housing having a lug on itsinner wall, a carrier rotatable 1n the houslng and having a projectionarranged to engage said lug, a COll spring located in the carrier withits outer adapted to engage the lug on the casing, an

arm on the spindle carrying a lug, a bushing surrounding the sleeve ofthe carrier, the bushing having the inner end of the spring securedthereto and also having ratchet teeth on its upper part, a sleevesurrounding the spindle above the bushing and carrying a lug arranged toengage the lug on the arm, and a lug on the upper part of the housingarranged to engage the lug on the sleeve.

2. In a door closer, the combination with the spring device operable toreturn the door to an intermediate position upon the door being swung ineither direction from said position, of a rotatable spindle to operatesaid device, an arm fast on the outer end of said spindle, a leverpivotally mounted on said arm to have vertical movement, a link memberhaving one end pivotally connected with the other end of said lever, abracket on the door frame, and the link member and bracket having ascrew-threaded connection whereby the swinging of the link on thebracket will give the link an axial movement to raise and lower thelever bodily when swung in opposite directions respectively.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ADOLF DAMITZ.

Witnesses:

WOLDEMAR HAUPT, HENRY HAsPER,

